Achieve natural pearly whites with mr blancs teeth whitening strips a two week supply of peroxide free whitening strips that work to safely whiten and brighten your teeth clinically proven to safely and effectively whiten your smile each flexible strip is coated with a whitening gel and fits perfectly to the contour of your teeth a host of enamel friendly ingredients work on the surface and beneath absorbing into the enamel to remove stains and prevent new ones from forming deeply embedd